Profiled cylinder for teaseling and/or fluffing machines

Abstract

A profiled cylinder for teaseling and/or fluffing machines of the type having a generally cylindrical outer peripheral surface and provided at its ends with support hubs for its rotation, in which the radially outer peripheral surface has a particular profile caused by a plurality of variously arranged geometrical forms or surface portions disposed for abraiding contact with a fabric which is to be treated by passage through the machine.

We claim: 
     
       1. A profiled cylinder for a teaseling and/or fluffing machine, comprising: a cylinder having a generally cylindrical outer peripheral surface, two axially opposite ends, and, projecting axially outwards at said ends, two respective support hubs, for rotation of the cylinder about a longitudinal axis thereof;   each said outer peripheral surface having a circumferentially extending series of alternating crests and recesses, each extending from end to end of said surface;   each crest being defined between two angularly opposite flanks, both of which are oblique to said longitudinal axis, so as to twist about said axis;   said surface being arranged for abraiding engagement with a fabric by turning of the cylinder about said axis while maintaining the fabric in engagement with said surface;   each said crest and each recess being generally arched in transverse cross-sectional shape, each recess having a smaller radius of curvature in transverse cross-sectional shape than each crest;   both said flanks of each crest twisting about said axis in two opposite angular senses, so that each crest is trapezoid-shaped in front elevational profile; and   on each crest, a respective one of said flanks being generally flat in transverse cross-sectional profile and the other being generally convex in transverse cross-sectional profile.